Pectoral girdle and shoulder joint

Question 1

Attachments of the glenohumeral ligaments

Answer 1

lesser tubercle to edges of glenoid cavity

Question 2

Attachments of coracohumeral ligament

Answer 2

greater tubercle to coracoid process

Question 3

What is the role of the transverse humeral ligament

Answer 3

Passes between tubercles of humerus, hold biceps tendon in place

Question 4

Name the ligaments connecting the clavicle to the scapula, sternum and ribs

Answer 4

Acromioclavicular (AC) ligament
Coracoacromial (CA) ligament
Coracoclavicular (CC) ligament
Ant & post. sternoclavicular ligaments
costoclavicular ligament (1st rib)
interclavicular ligament

Question 5

Where does subclavian artery become axillary artery

Answer 5

ass it emerges from beneath the clavicle and passes over the 1st rib

Question 6

What are the borders of the quadrangular space

Answer 6

sup - teres minor
inf - teres major
lateral - humerus
medial - triceps brachii

Question 7

What important structures pass through the quadrangular space

Answer 7

axillary nerve and posterior circumflex humeral artery

Question 8

What are the borders of the triangular space

Answer 8

sup - teres major
medial - long head of triceps
lateral - humerus

Question 9

Which important structures pass through the triangular space

Answer 9

radial nerve and profunda brachii

Question 10

Actions of pec major

Answer 10

flexion, adduction and medial rotation of arm t glenohumeral joint

Question 11

Attachments of pec major

Answer 11

Clavicle
costal cartilage ribs 1-6
sternum to outer lip of bicipital groove

Question 12

Innervation to pec major

Answer 12

medial pectoral nerve C8-T1
lateral pectoral nerve C5-C7

Question 13

Actions of pec minor

Answer 13

pulls shoulder anterior and inferior
can elevate ribs if shoulder fixed

Question 14

Attachments of pec minor

Answer 14

3-5th ribs to coracoid process

Question 15

innervation of pec minor

Answer 15

medial pectoral nerve C8-T1

Question 16

Describe the attachments of the deltoid

Answer 16

lateral 1/3 clavicle, acromion, spine of scapula to deltoid tuberosity of humerus

Question 17

Describe the movements that each set of deltoid fibres allows

Answer 17

anterior - flexion and medial rotation
middle - adduction
posterior - extension and lateral rotation

Question 18

Which BP cord does the axillary nerve originate from

Answer 18

Posterior cord

Question 19

Action of teres major

Answer 19

adduction and medial rotation of arm

Question 20

Attachments of teres major

Answer 20

lateral border of scapula to medial lip of bicipital groove of humerus

Question 21

Innervation of teres major w/ original cord of BP

Answer 21

subscapular branch of posterior cord

Question 22

Attachments of subclavius

Answer 22

sternal end of rib 1 to middle 1/3 of clavicle

Question 23

Innervation of subclavius

Answer 23

Nerve to subclavius (C5,6)

Question 24

Attachments of subscapularis

Answer 24

Subscapular fossa to lesser tubercle of humerus

Question 25

Innervation to subscapularis

Answer 25

upper and lower subscapular nerves C5-7 from posterior cord of BP

Question 26

Innervation of supraspinatus

Answer 26

suprascapular nerve C5,6 from superior trunk of BP

Question 27

Action of infraspinatus

Answer 27

lateral rotation of arm

Question 28

Innervation of infraspinatus

Answer 28

suprascapular nerve C5,6 from superior trunk of BP

Question 29

Action of teres minor

Answer 29

lateral rotation

Question 30

Attachments of teres minor

Answer 30

upper 2/3 of lateral border of scapula to lower faucet of greater tubercle of humerus

Question 31

Innervation to teres minor

Answer 31

Axillary nerve C5,6 from posterior cord of BP